Structural Engineering and Mechanics

  • 제47권3호
  • /
  • Pages.331-343
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  • 2013
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Sloshing characteristics of an annular cylindrical tuned liquid damper for spar-type floating offshore wind turbine

  • Jeon, S.H. (School of Mechanical Engineering, Pusan National University) ;
  • Seo, M.W. (School of Mechanical Engineering, Pusan National University) ;
  • Cho, Y.U. (School of Mechanical Engineering, Pusan National University) ;
  • Park, W.G. (School of Mechanical Engineering, Pusan National University) ;
  • Jeong, W.B. (School of Mechanical Engineering, Pusan National University)
  • 투고 : 2012.08.06
  • 심사 : 2013.07.17
  • 발행 : 2013.08.10
⟨ 이전 논문 다음 논문 ⟩

초록

The natural sloshing frequencies of annular cylindrical TLD are parametrically investigated by experiment, aiming at the exploration of its successful use for suppressing the structural vibration of spar-type floating wind turbine subject to multidirectional wind, wave and current excitations. Five prototypes of annular cylindrical TLD are defined according to the inner and outer radii of acryl container, and eight different liquid fill heights are experimented for each TLD prototype. The apparent masses near the first and second natural sloshing frequencies are parametrically investigated by measuring the apparent mass of interior liquid sloshing to the acceleration excitation. It is observed from the parametric experiments that the first natural sloshing frequency shows the remarkable change with respect to the liquid fill height for each TLD model with different container dimensions. On the other hand, the second natural sloshing frequency is not sensitive to the liquid fill height but to the gap size, for all the TLD models, convincing that the annular cylindrical sloshing damper can effectively suppress the wave- and wind-induced tilting motion of the spar-type floating wind turbine.

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과제정보

연구 과제 주관 기관 : KETEP

참고문헌

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피인용 문헌

  1. Numerical and experimental study on dynamic response of moored spar-type scale platform for floating offshore wind turbine vol.54, pp.5, 2015, https://doi.org/10.12989/sem.2015.54.5.909
  2. Numerical simulation of tuned liquid tank- structure systems through σ-transformation based fluid-structure coupled solver vol.23, pp.5, 2016, https://doi.org/10.12989/was.2016.23.5.421
  3. Tuned liquid column damper for suppressing pitching motion of a floating rectangular box structure vol.24, pp.11, 2017, https://doi.org/10.1002/stc.2014
  4. Sloshing characteristics of annular tuned liquid damper (ATLD) for applications in composite bushings vol.25, pp.8, 2018, https://doi.org/10.1002/stc.2184
  5. Tuned liquid dampers for multi-storey structure: numerical simulation using a partitioned FSI algorithm and experimental validation vol.42, pp.4, 2013, https://doi.org/10.1007/s12046-017-0614-z